How to get the notification configuration details of a S3 bucket using Boto3 and AWS Client?

Problem Statement − Use boto3 library in Python to get the notification configuration of a S3 bucket. For example, find the notification configuration details of Bucket_1 in S3.

Approach/Algorithm to solve this problem

Step 1 − Import boto3 and botocore exceptions to handle exceptions.

Step 2 − Use bucket_name as the parameter in the function.

Step 3 − Create an AWS session using boto3 library.

Step 4 − Create an AWS client for S3.

Step 5 − Now use the function get_bucket_notification_configuration and pass the bucket name.

Step 6 − It returns the dictionary containing the details about S3. If notification is not set, then it returns NONE

Step 7 − Handle the generic exception if something went wrong while deleting the file.

Example

Use the following code to get the notification configuration details −

import boto3
from botocore.exceptions import ClientError

def get_bucket_notificationconfiguration_of_s3(bucket_name):
   session = boto3.session.Session()
   s3_client = session.client('s3')
   try:
      result = s3_client.get_bucket_notification_configuration(Bucket=bucket_name,)
   except ClientError as e:
      raise Exception( "boto3 client error in get_bucket_notificationconfiguration_of_s3: " + e.__str__())
   except Exception as e:
      raise Exception( "Unexpected error in get_bucket_notificationconfiguration_of_s3 function: " + e.__str__())
return result

print(get_bucket_notificationconfiguration_of_s3("Bucket_1"))

Output

{
   'TopicConfigurations': [
      {
         'Id': 'string',
         'TopicArn': 'string',
         'Events': [

                    's3:ReducedRedundancyLostObject'|'s3:ObjectCreated:*'|'s3:ObjectCreated: Put'|'s3:ObjectCreated:Post'|'s3:ObjectCreated:Copy'|'s3:ObjectCreated:C
                    ompleteMultipartUpload'|'s3:ObjectRemoved:*'|'s3:ObjectRemoved:Delete'|'
                    s3:ObjectRemoved:DeleteMarkerCreated'|'s3:ObjectRestore:*'|'s3:ObjectRes
                    tore:Post'|'s3:ObjectRestore:Completed'|'s3:Replication:*'|'s3:Replicati
                    on:OperationFailedReplication'|'s3:Replication:OperationNotTracked'|'s3:
                    Replication:OperationMissedThreshold'|'s3:Replication:OperationReplicate
                    dAfterThreshold',
         ],
         'Filter': {
            'Key': {
               'FilterRules': [
                  {
                     'Name': 'prefix'|'suffix',
                     'Value': 'string'
                  },
               ]
            }
         }
      },
   ],
   'QueueConfigurations': [
      {
         'Id': 'string',
         'QueueArn': 'string',
         'Events': [

                    's3:ReducedRedundancyLostObject'|'s3:ObjectCreated:*'|'s3:ObjectCreated:
                    Put'|'s3:ObjectCreated:Post'|'s3:ObjectCreated:Copy'|'s3:ObjectCreated:C
                    ompleteMultipartUpload'|'s3:ObjectRemoved:*'|'s3:ObjectRemoved:Delete'|'
                    s3:ObjectRemoved:DeleteMarkerCreated'|'s3:ObjectRestore:*'|'s3:ObjectRes
                    tore:Post'|'s3:ObjectRestore:Completed'|'s3:Replication:*'|'s3:Replicati
                    on:OperationFailedReplication'|'s3:Replication:OperationNotTracked'|'s3:
                    Replication:OperationMissedThreshold'|'s3:Replication:OperationReplicate
                    dAfterThreshold',
         ],
         'Filter': {
            'Key': {
               'FilterRules': [
                  {
                     'Name': 'prefix'|'suffix',
                     'Value': 'string'
                  },
               ]
            }
         }
      },
   ],
   'LambdaFunctionConfigurations': [
      {
         'Id': 'string',
         'LambdaFunctionArn': 'string',
         'Events': [

                    's3:ReducedRedundancyLostObject'|'s3:ObjectCreated:*'|'s3:ObjectCreated:
                    Put'|'s3:ObjectCreated:Post'|'s3:ObjectCreated:Copy'|'s3:ObjectCreated:C
                    ompleteMultipartUpload'|'s3:ObjectRemoved:*'|'s3:ObjectRemoved:Delete'|'
                    s3:ObjectRemoved:DeleteMarkerCreated'|'s3:ObjectRestore:*'|'s3:ObjectRes
                    tore:Post'|'s3:ObjectRestore:Completed'|'s3:Replication:*'|'s3:Replicati
                    on:OperationFailedReplication'|'s3:Replication:OperationNotTracked'|'s3:
                    Replication:OperationMissedThreshold'|'s3:Replication:OperationReplicate
                    dAfterThreshold',
         ],
         'Filter': {
            'Key': {
               'FilterRules': [
                  {
                     'Name': 'prefix'|'suffix',
                     'Value': 'string'
                  },
               ]
            }
         }
      },
   ]
}

Note: This output depends on the settings/permissions of bucket. It omits the result if some settings/permissions are default or not set. Similarly, if notification is not set for bucket then it returns NONE.